I pretty much always suggest folks to use BOTH a rich sediment and a rich water column.
MTS or ADA aqua soil etc.
This way you if you forget to dose the water, not an issue, you have backup. Adding ferts to the water will also extend the usable life span of MTS/ADA AS also. And once something is exhausted, the water column dosing prevents any issue.
It's sort like this:
Rich sediment+water column => 1+1 = 2
Rich sediment alone => 1+0= 1
Rich water column alone => 1+0= 1
I use rich sediments + rich water column, I think the results speaks louder:
If you screw up and forget to dose the water column........things are fine, you have more wiggle room.
With richer sediments, you need to be a bit more careful not to make mess when gardening and replanting. Do a good sized water change afterward if you do.